CVE-2022-34174: Jenkins core Observable Timing Discrepancy Allows Determining Vulnerability

Q: What is CVE-2022-34174?

CVE-2022-34174 is a security vulnerability in Jenkins core involving Observable timing discrepancy allows determining username validity in Jenkins under CWE-203: Observable Discrepancy.

Q: Which Jenkins core versions are affected?

Affected versions include releases prior to 2.356, 2.332.4 across affected packages: org.jenkins-ci.main:jenkins-core.

Q: What version fixes CVE-2022-34174?

Upgrading to 2.356, 2.332.4 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is jenkins-core affected?

Yes, org.jenkins-ci.main:jenkins-core is affected in releases prior to 2.356, 2.332.4. Upgrade your dependency to 2.356, 2.332.4 or later.

Q: What is the CVSS score of CVE-2022-34174?

CVE-2022-34174 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Q: What CWE is associated with CVE-2022-34174?

CVE-2022-34174 is classified under CWE-203: Observable Discrepancy (The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.).

Q: How can I check Maven dependencies for CVE-2022-34174?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.main'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

MODERATE

Advisory Identifier: GHSA-9grj-j43m-mjqr

CVSS 5.3

CWE-203 CWE-208

Published 2022-06-24

Advisory Summary

CVE-2022-34174 is a MODERATE (CVSS 5.3) observable timing discrepancy allows determining vulnerability (CWE-203: Observable Discrepancy) affecting Jenkins core libraries in the Maven ecosystem. The issue involves observable timing discrepancy allows determining username validity in jenkins. Remediation is available by upgrading affected packages to version 2.356, 2.332.4.

CVE-2022-34174 at a Glance

CVE Identifier CVE-2022-34174

GHSA Identifier GHSA-9grj-j43m-mjqr

Severity MODERATE

CVSS v3.1 Base Score 5.3

CWE Classification CWE-203: Observable Discrepancy

Affected Product Jenkins core

Package Ecosystem Maven

Published Date 2022-06-24

Last Updated 2022-12-05

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)

Attack Complexity Low (AC:L)

Privileges Required None (PR:N)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality Low (C:L)

Integrity None (I:N)

Availability None (A:N)

How to Fix CVE-2022-34174

To remediate this vulnerability, upgrade all affected Jenkins core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.jenkins-ci.main:jenkins-core fixed: 2.356

<dependency>
    <groupId>org.jenkins-ci.main</groupId>
    <artifactId>jenkins-core</artifactId>
    <version>2.356</version>
</dependency>

org.jenkins-ci.main:jenkins-core fixed: 2.332.4

<dependency>
    <groupId>org.jenkins-ci.main</groupId>
    <artifactId>jenkins-core</artifactId>
    <version>2.332.4</version>
</dependency>

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

mvn dependency:tree -Dincludes=org.jenkins-ci.main

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-34174, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.jenkins-ci.main

Analyze the terminal output to locate any version of Jenkins core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.356), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.jenkins-ci.main command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-203: Observable Discrepancy, where the product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor. In Jenkins core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm. This allows attackers to determine the validity of attacker-specified usernames. Login attempts with an invalid username now validate a synthetic password to eliminate the timing discrepancy in Jenkins 2.356, LTS 2.332.4.

CVE-2022-34174 Affected Jenkins core Versions

2 component(s)

Fixed Versions:

2.3562.332.4

Product / Package	Ecosystem	Affected Versions	Fixed Version
org.jenkins-ci.main:jenkins-core maven/org.jenkins-ci.main/jenkins-core	Maven	≥ 2.334 < 2.356	2.356
org.jenkins-ci.main:jenkins-core maven/org.jenkins-ci.main/jenkins-core	Maven	< 2.332.4	2.332.4

References

NVD — CVE-2022-34174 NVD

https://nvd.nist.gov/vuln/detail/CVE-2022-34174

Security Fix Commit FIX COMMIT

https://github.com/jenkinsci/jenkins/commit/957ef5902f2e40b6358e6d10f12b26f9dbd2f75a

Jenkins core Source Repository REPOSITORY

https://github.com/jenkinsci/jenkins

Jenkins core Security Information SECURITY

https://www.jenkins.io/security/advisory/2022-06-22/#SECURITY-2566

Frequently Asked Questions

What is CVE-2022-34174?

CVE-2022-34174 is a security vulnerability in Jenkins core involving Observable timing discrepancy allows determining username validity in Jenkins under CWE-203: Observable Discrepancy.

Which Jenkins core versions are affected?

Affected versions include releases prior to 2.356, 2.332.4 across affected packages: org.jenkins-ci.main:jenkins-core.

What version fixes CVE-2022-34174?

Upgrading to 2.356, 2.332.4 (or the latest patched release for your respective branch) resolves the vulnerability.

Is jenkins-core affected?

Yes, org.jenkins-ci.main:jenkins-core is affected in releases prior to 2.356, 2.332.4. Upgrade your dependency to 2.356, 2.332.4 or later.

What is the CVSS score of CVE-2022-34174?

CVE-2022-34174 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

What CWE is associated with CVE-2022-34174?

CVE-2022-34174 is classified under CWE-203: Observable Discrepancy (The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.).

How can I check Maven dependencies for CVE-2022-34174?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.main'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

Machine-readable OSV JSON OSV v1.5 Schema

Normalized schema output

View Raw JSON

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9grj-j43m-mjqr",
  "modified" : "2022-12-05T23:37:15Z",
  "published" : "2022-06-24T00:00:31Z",
  "aliases" : [ "CVE-2022-34174" ],
  "summary" : "Observable timing discrepancy allows determining username validity in Jenkins",
  "details" : "In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm. This allows attackers to determine the validity of attacker-specified usernames.\n\nLogin attempts with an invalid username now validate a synthetic password to eliminate the timing discrepancy in Jenkins 2.356, LTS 2.332.4.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.main:jenkins-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.334"
      }, {
        "fixed" : "2.356"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.main:jenkins-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.332.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-34174"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/jenkins/commit/957ef5902f2e40b6358e6d10f12b26f9dbd2f75a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/jenkins"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2022-06-22/#SECURITY-2566"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-203", "CWE-208" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-12-05T23:37:15Z",
    "nvd_published_at" : "2022-06-23T17:15:00Z"
  }
}

CVSS V3

5.3 MODERATE